Beyond Reactive Safety: Risk-Aware LLM Alignment via Long-Horizon Simulation

Chenkai Sun, Denghui Zhang, ChengXiang Zhai, Heng Ji


Abstract
Given the growing influence of language model-based agents on high-stakes societal decisions, from public policy to healthcare, ensuring their beneficial impact requires understanding the far-reaching implications of their suggestions. We propose a proof-of-concept framework that projects how model-generated advice could propagate through societal systems on a macroscopic scale over time, enabling more robust alignment. To assess the long-term safety awareness of language models, we also introduce a dataset of 100 indirect harm scenarios, testing models’ ability to foresee adverse, non-obvious outcomes from seemingly harmless user prompts. Our approach achieves not only over 20% improvement on the new dataset but also an average win rate exceeding 70% against strong baselines on existing safety benchmarks (AdvBench, SafeRLHF, WildGuardMix), suggesting a promising direction for safer agents.
Anthology ID:
2025.findings-acl.332
Volume:
Findings of the Association for Computational Linguistics: ACL 2025
Month:
July
Year:
2025
Address:
Vienna, Austria
Editors:
Wanxiang Che, Joyce Nabende, Ekaterina Shutova, Mohammad Taher Pilehvar
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
6422–6434
Language:
URL:
https://preview.aclanthology.org/transition-to-people-yaml/2025.findings-acl.332/
DOI:
10.18653/v1/2025.findings-acl.332
Bibkey:
Cite (ACL):
Chenkai Sun, Denghui Zhang, ChengXiang Zhai, and Heng Ji. 2025. Beyond Reactive Safety: Risk-Aware LLM Alignment via Long-Horizon Simulation. In Findings of the Association for Computational Linguistics: ACL 2025, pages 6422–6434, Vienna, Austria. Association for Computational Linguistics.
Cite (Informal):
Beyond Reactive Safety: Risk-Aware LLM Alignment via Long-Horizon Simulation (Sun et al., Findings 2025)
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PDF:
https://preview.aclanthology.org/transition-to-people-yaml/2025.findings-acl.332.pdf